diff --git a/octave.spec b/octave.spec
index a1e8d21..2609983 100644
--- a/octave.spec
+++ b/octave.spec
@@ -1,5 +1,5 @@
 Name:          octave
-Version:       6.3.0
+Version:       6.4.0
 Release:       1mamba
 Summary:       A high-level language, primarily intended for numerical computations
 Group:         Applications/Mathematics
@@ -211,6 +211,9 @@ install -D -m 644 %{SOURCE1} \
 #%doc ChangeLog README NEWS INSTALL
 
 %changelog
+* Wed Nov 03 2021 Automatic Build System <autodist@mambasoft.it> 6.4.0-1mamba
+- automatic version update by autodist
+
 * Mon Jul 12 2021 Automatic Build System <autodist@mambasoft.it> 6.3.0-1mamba
 - automatic version update by autodist